Cost to Build a Single Storey Extension in BR1

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Build a single storey extension in BR1 from £44,120

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Single storey extension cost in BR1

Extension builder estimates (based on hourly rates) to build a single storey extension in BR1

Estimates for single storey extension near BR1

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Borough in London
Single Storey Extension in Bromley
Single Storey Extension in Keston
Single Storey Extension in Chislehurst
Single Storey Extension in Grove Park
Single Storey Extension in Beckenham
Single Storey Extension in Catford
Single Storey Extension in West Wickam
Single Storey Extension in Eltham
Single Storey Extension in Penge
Single Storey Extension in Sydenham

Estimates for common extension builder jobs in BR1;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building

Underpin a building - £17,647

Two storey extension

Two storey extension - £88,221

Build a timber frame extension

Build a timber frame extension - £26,147

Build a swimming pool

Build a swimming pool - £81,147

Single storey extension

Single storey extension - £57,944

Side return extension

Side return extension - £43,156

Install an RSJ

Install an RSJ - £2,347

Outbuilding

Outbuilding - £10,147

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,147

Loft conversion

Loft conversion - £35,130

Build a kitchen extension

Build a kitchen extension - £42,147

Hip to gable loft conversion

Hip to gable loft conversion - £42,147

Granny annexe

Granny annexe - £87,147

Garden office

Garden office - £10,147

Convert a Garage

Convert a Garage - £16,147

Garage

Garage - £18,647

Build a flat roof extension

Build a flat roof extension - £22,147

Build a dormer loft conversion

Build a dormer loft conversion - £42,147

Concrete foundations

Concrete foundations - £6,397

Convert a bungalow loft

Convert a bungalow loft - £29,147

Convert a basement

Convert a basement - £39,156

More extensions & conversions cost guides...